Optical properties of graphane in infrared range

TL;DR

This paper develops a theoretical framework for understanding the infrared optical properties of graphane, including conductivity, reflection, and surface plasmon-polariton dispersion, aiding in material characterization and device design.

Contribution

It introduces a simple analytical model of graphane's band structure and a modified quantum coherence relaxation model for optical property analysis.

Findings

Theoretical predictions match experimental data for graphane's optical response.

Analysis enables determination of Fermi level and relaxation rate.

Potential applications in designing optical elements using graphane.

Abstract

The theory of optical effects in hydrogenated graphene (graphane) in terahertz and infrared range is developed, including the analysis of complex conductivity, reflection coefficient for graphane on a substrate and dispersion of surface plasmon-polaritons. The calculations are based on quite simple analytical approximation of graphane band structure in the vicinity of Gamma-point and on the modified model of quantum coherence relaxation. Comparison of the obtained theoretical results with corresponding experimental data can be used both for the determination of graphane characteristics (Fermi level, relaxation rate etc.) and for the investigation of potential applications of this material in the design of new optical elements.